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5129029d3b
This patch adds support for the rzusbstick for the atusb firmware. More detailed information about this usb stick: http://www.atmel.com/tools/rzusbstick.aspx Original I have the rzraven kit: http://www.atmel.com/tools/rzraven.aspx Which comes with a special cable and avr dragon programmer. You need some programmer and wires to the programmers pins. To lookup how to connect the programmer to the rzusbstick pinout, see: http://www.atmel.com/Images/doc8117.pdf page 22 (schematics of the rzusbstick). Difference between atusb and rzusbstick(rzusb) is mainly the at86rf231 vs at86rf230 one. The rzusb contains the at86rf230 which is a little bit hard to deal with it (and has a huge errata inside the datasheet). Nevertheless with small schanges the atusb firmware can run now on the rzusb. The rzusb contains also a bigger mcu, so we can maybe cache more pdus for receive handling. To compile the rzusb firmware call: make NAME=rzusb this will generate the rzusb.bin then call the programmer (in my case avrdude): avrdude -P usb -c dragon_jtag -p usb1287 -U flash:w:rzusb.bin NOTE: currently there is no chance (I suppose) to ensure that the atusb receive the correct firmware, so don't try to flash the atusb with the rzusb firmware! Also the vendor and product id is the same. This currently a RFC, it's a quick hack and I think we should update more the documentation to support the rzusb. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Cc: Stefan Schmidt <stefan@osg.samsung.com> Cc: Werner Almesberger <werner@almesberger.net>
159 lines
2.8 KiB
C
159 lines
2.8 KiB
C
/*
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* fw/board.c - Board-specific functions (for boot loader and application)
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*
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* Written 2011, 2013 by Werner Almesberger
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* Copyright 2011, 2013 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <avr/boot.h>
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#define F_CPU 8000000UL
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#include <util/delay.h>
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#include "usb.h"
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#include "at86rf230.h"
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#include "board.h"
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#include "spi.h"
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uint8_t board_sernum[42] = { 42, USB_DT_STRING };
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static void set_clkm(void)
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{
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/* switch CLKM to 8 MHz */
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/*
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* @@@ Note: Atmel advise against changing the external clock in
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* mid-flight. We should therefore switch to the RC clock first, then
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* crank up the external clock, and finally switch back to the external
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* clock. The clock switching procedure is described in the ATmega32U2
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* data sheet in secton 8.2.2.
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*/
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#ifdef ATUSB
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spi_begin();
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spi_send(AT86RF230_REG_WRITE | REG_TRX_CTRL_0);
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spi_send(CLKM_CTRL_8MHz);
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spi_end();
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#endif
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#ifdef RZUSB
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spi_begin();
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spi_send(AT86RF230_REG_WRITE | REG_TRX_CTRL_0);
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spi_send(0x10);
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spi_end();
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/* TX_AUTO_CRC_ON, default disabled */
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spi_begin();
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spi_send(AT86RF230_REG_WRITE | 0x05);
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spi_send(0x80);
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spi_end();
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#endif
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}
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void reset_rf(void)
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{
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/* set up all the outputs; default port value is 0 */
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DDRB = 0;
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DDRC = 0;
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DDRD = 0;
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PORTB = 0;
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PORTC = 0;
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PORTD = 0;
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OUT(LED);
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OUT(nRST_RF); /* this also resets the transceiver */
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OUT(SLP_TR);
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spi_init();
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/* AT86RF231 data sheet, 12.4.13, reset pulse width: 625 ns (min) */
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CLR(nRST_RF);
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_delay_us(2);
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SET(nRST_RF);
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/* 12.4.14: SPI access latency after reset: 625 ns (min) */
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_delay_us(2);
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/* we must restore TRX_CTRL_0 after each reset (9.6.4) */
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set_clkm();
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}
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void led(bool on)
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{
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if (on)
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SET(LED);
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else
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CLR(LED);
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}
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void panic(void)
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{
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cli();
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while (1) {
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SET(LED);
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_delay_ms(100);
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CLR(LED);
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_delay_ms(100);
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}
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}
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static char hex(uint8_t nibble)
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{
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return nibble < 10 ? '0'+nibble : 'a'+nibble-10;
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}
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static void get_sernum(void)
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{
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uint8_t sig;
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uint8_t i;
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for (i = 0; i != 10; i++) {
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sig = boot_signature_byte_get(i+0xe);
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board_sernum[(i << 2)+2] = hex(sig >> 4);
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board_sernum[(i << 2)+4] = hex(sig & 0xf);
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}
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}
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void board_init(void)
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{
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/* Disable the watchdog timer */
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MCUSR = 0; /* Remove override */
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WDTCSR |= 1 << WDCE; /* Enable change */
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WDTCSR = 1 << WDCE; /* Disable watchdog while still enabling
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change */
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CLKPR = 1 << CLKPCE;
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#ifdef ATUSB
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/* We start with a 1 MHz/8 clock. Disable the prescaler. */
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CLKPR = 0;
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#endif
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#ifdef RZUSB
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/* We start with a 16 MHz/8 clock. Put the prescaler to 2. */
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CLKPR = 1 << CLKPS0;
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#endif
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get_sernum();
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}
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